Mobile TechnologiesMobile technology is the technology used for cellular communication.
Mobile code division multiple access (CDMA) technology has evolved
rapidly over the past few years. Since the start of this millennium, a
standard mobile device has gone from being no more than a simple
two-way pager to being a mobile phone, GPS navigation device, an
embedded web browser and instant messaging client, and a handheld game
console. Many experts believe that the future of computer technology
rests in mobile computing with wireless networking. Mobile computing
by way of tablet computers are becoming more popular
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Trackball
A trackball is a pointing device consisting of a ball held by a socket
containing sensors to detect a rotation of the ball about two
axes—like an upside-down mouse with an exposed protruding ball.[1]
The user rolls the ball to position the on-screen pointer, using their
thumb, fingers, or commonly the palm of the hand while using the
fingertips to press the mouse buttons.
Compared with a mouse, a trackball has no limits on effective travel;
at times, a mouse can reach an edge of its working area while the
operator still wishes to move the screen pointer farther. With a
trackball, the operator just continues rolling, whereas a mouse would
have to be lifted and re-positioned. Some trackballs have notably low
friction, as well as being made of a dense material such as glass, so
they can be spun to make them coast
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Open-source Model
The open-source model is a decentralized software-development model
that encourages open collaboration.[1][2] A main principle of
open-source software development is peer production, with products
such as source code, blueprints, and documentation freely available to
the public. The open-source movement in software began as a response
to the limitations of proprietary code. The model is used for projects
such as in open-source appropriate technology,[3] and open-source drug
discovery.[4][5]
Open sourceOpen source promotes universal access via an open-source or free
license to a product's design or blueprint, and universal
redistribution of that design or blueprint.[6][7] Before the phrase
open source became widely adopted, developers and producers used a
variety of other terms
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Smartphone
A smartphone is a handheld personal computer with a mobile operating
system and an integrated mobile broadband cellular network connection
for voice, SMS, and
InternetInternet data communication; most if not all
smartphones also support Wi-Fi. Smartphones are typically
pocket-sized, as opposed to tablet computers, which are much larger.
They are able to run a variety of software components, known as
“apps”. Most basic apps (e.g. event calendar, camera, web browser)
come pre-installed with the system, while others are available for
download from official sources like the
Google Play StoreGoogle Play Store or Apple App
Store. Apps can receive bug fixes and gain additional functionality
through software updates; similarly, operating systems are able to
update
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Android (operating System)
Android is a mobile operating system developed by Google, based on a
modified version of the
Linux kernelLinux kernel and other open source software
and designed primarily for touchscreen mobile devices such as
smartphones and tablets. In addition,
GoogleGoogle has further developed
Android TVAndroid TV for televisions,
Android AutoAndroid Auto for cars, and
Wear OSWear OS for
wrist watches, each with a specialized user interface. Variants of
Android are also used on game consoles, digital cameras, PCs and other
electronics.
Initially developed by Android Inc., which
GoogleGoogle bought in 2005,
Android was unveiled in 2007, with the first commercial Android device
launched in September 2008. The operating system has since gone
through multiple major releases, with the current version being 8.1
"Oreo", released in December 2017
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WebOS
webOS, also known as LG webOS and previously known as Open webOS, HP
webOS and Palm webOS,[2] is a
LinuxLinux kernel-based multitasking
operating system for smart devices such as smart TVs and it has been
used as a mobile operating system. Initially developed by Palm, Inc.
(which was acquired by Hewlett-Packard), HP made the platform open
source, at which point it became Open webOS. The operating system was
later sold to LG Electronics
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IOS
iOS (formerly iPhone OS) is a mobile operating system created and
developed by
Apple Inc.Apple Inc. exclusively for its hardware. It is the
operating system that presently powers many of the company's mobile
devices, including the iPhone, iPad, and iPod Touch. It is the second
most popular mobile operating system globally after Android.
Originally unveiled in 2007 for the iPhone, iOS has been extended to
support other Apple devices such as the iPod Touch (September 2007)
and the iPad (January 2010). As of January 2017[update], Apple's
App Store contains more than 2.2 million iOS applications, 1 million
of which are native for iPads. These mobile apps have collectively
been downloaded more than 130 billion times.
The iOS user interface is based upon direct manipulation, using
multi-touch gestures. Interface control elements consist of sliders,
switches, and buttons
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SymbianSymbianSymbian was a mobile operating system (OS) and computing platform
designed for smartphones.[6]
SymbianSymbian was originally developed as a
closed-source OS for PDAs in 1998 by
SymbianSymbian Ltd.[7]
SymbianSymbian OS was a
descendant of Psion's EPOC, and ran exclusively on ARM processors,
although an unreleased x86 port existed.
SymbianSymbian was used by many
major mobile phone brands, like Samsung, Motorola, Sony Ericsson, and
above all by Nokia. It was also prevalent in Japan by brands including
Fujitsu, Sharp and Mitsubishi
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BadaBadaBada (stylized as bada; Korean: 바다) is a discontinued operating
system for mobile devices such as smartphones and tablet computers. It
was developed by
SamsungSamsung Electronics. Its name is derived from "바다
(bada)", meaning "ocean" or "sea" in Korean
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GoogleGoogleGoogle LLC[5] is an American multinational technology company that
specializes in Internet-related services and products, which include
online advertising technologies, search engine, cloud computing,
software, and hardware.
GoogleGoogle was founded in 1998 by
Larry PageLarry Page and
Sergey BrinSergey Brin while they were Ph.D. students at Stanford University,
California. Together, they own about 14 percent of its shares and
control 56 percent of the stockholder voting power through supervoting
stock. They incorporated
GoogleGoogle as a privately held company on
September 4, 1998. An
Initial public offeringInitial public offering (IPO) took place on
August 19, 2004, and
GoogleGoogle moved to its new headquarters in Mountain
View, California, nicknamed the Googleplex
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Mobile App
A mobile app is a computer program designed to run on a mobile device
such as a phone/tablet or watch.
Mobile applications often stand in contrast to desktop applications
that run on desktop computers, and with web applications which run in
mobile web browsers rather than directly on the mobile device.
The term "app" is a shortening of the term "software application". It
has become very popular, and in 2010 was listed as "Word of the Year"
by the American Dialect Society.[1] In 2009, technology columnist
David PogueDavid Pogue said that newer smartphones could be nicknamed "app
phones" to distinguish them from earlier less-sophisticated
smartphones.[2]Contents1 Overview
2 Development
3 Distribution3.1 Google Play
3.2 App Store
3.3
MicrosoftMicrosoft Store
3.4 Others4 Enterprise management4.1 App wrapping vs
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Algorithm
In mathematics and computer science, an algorithm
(/ˈælɡərɪðəm/ ( listen) AL-gə-ridh-əm) is an
unambiguous specification of how to solve a class of problems.
Algorithms can perform calculation, data processing and automated
reasoning tasks.
An algorithm is an effective method that can be expressed within a
finite amount of space and time[1] and in a well-defined formal
language[2] for calculating a function.[3] Starting from an initial
state and initial input (perhaps empty),[4] the instructions describe
a computation that, when executed, proceeds through a finite[5] number
of well-defined successive states, eventually producing "output"[6]
and terminating at a final ending state. The transition from one state
to the next is not necessarily deterministic; some algorithms, known
as randomized algorithms, incorporate random input.[7]
The concept of algorithm has existed for centuries and the use of the
concept can be ascribed to Greek mathematicians, e.g
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App Store (iOS)
The App Store is a digital distribution platform, developed and
maintained by Apple Inc., for mobile apps on its iOS operating system.
The store allows users to browse and download apps developed with
Apple's iOS software development kit. Apps can be downloaded on the
iPhone smartphone, the iPod Touch handheld computer, or the iPad
tablet computer, and some can be transferred to the Apple Watch
smartwatch or 4th-generation or newer Apple TVs as extensions of
iPhone apps.
The App Store was opened on July 10, 2008, with an initial 500
applications available. As of January 2017[update], the store
features over 2.2 million apps.
Developers have multiple options for monetizing their applications,
ranging from free, free with in-app purchases, and paid. However, App
Store has been criticized for a lackluster development environment,
prompting the company in June 2016 to announce a "renewed focus and
energy" on the store
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